Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741577
F. Ding, Huaiguang Jiang, Jin Tan
This paper proposes an event-driven approach for reconfiguring distribution systems automatically. Specifically, an optimal synchrophasor sensor placement (OSSP) is used to reduce the number of synchrophasor sensors while keeping the whole system observable. Then, a wavelet-based event detection and location approach is used to detect and locate the event, which performs as a trigger for network reconfiguration. With the detected information, the system is then reconfigured using the hierarchical decentralized approach to seek for the new optimal topology. In this manner, whenever an event happens the distribution network can be reconfigured automatically based on the real-time information that is observable and detectable.
{"title":"Automatic distribution network reconfiguration: An event-driven approach","authors":"F. Ding, Huaiguang Jiang, Jin Tan","doi":"10.1109/PESGM.2016.7741577","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741577","url":null,"abstract":"This paper proposes an event-driven approach for reconfiguring distribution systems automatically. Specifically, an optimal synchrophasor sensor placement (OSSP) is used to reduce the number of synchrophasor sensors while keeping the whole system observable. Then, a wavelet-based event detection and location approach is used to detect and locate the event, which performs as a trigger for network reconfiguration. With the detected information, the system is then reconfigured using the hierarchical decentralized approach to seek for the new optimal topology. In this manner, whenever an event happens the distribution network can be reconfigured automatically based on the real-time information that is observable and detectable.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114463373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741177
M. Ashourianjozdani, L. Lopes, P. Pillay
The operation of diesel engine generator sets (gensets) with light loading leads to deterioration in the engine performance and efficiency. This problem is intensified in no-storage hydrokinetic-diesel systems since the genset is usually oversized to make-up for the potential shortage of renewable energy. In this paper, a new power sharing control strategy has been developed which minimizes this issue using a hydrokinetic energy conversion system (HKECS) that employs a diode AC-DC converter and voltage source inverter. The genset works with a frequency vs. power droop control. The HKECS is controlled with maximum power point tracking unless the grid frequency rises above a limit that indicates the underloading of the genset. At this point, a controlled DC load is activated so as to decrease the power injected by the HKECS thus regulating the grid frequency at this operating point. The proposed strategy is verified with a set-up with rotating machines and power electronic converters controlled via a dSPACE® system. The dynamic and steady-state operation of the system including power balancing, voltage and frequency control are presented.
{"title":"Power sharing control strategy for a no-storage hydrokinetic-diesel system in an isolated AC mini-grid","authors":"M. Ashourianjozdani, L. Lopes, P. Pillay","doi":"10.1109/PESGM.2016.7741177","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741177","url":null,"abstract":"The operation of diesel engine generator sets (gensets) with light loading leads to deterioration in the engine performance and efficiency. This problem is intensified in no-storage hydrokinetic-diesel systems since the genset is usually oversized to make-up for the potential shortage of renewable energy. In this paper, a new power sharing control strategy has been developed which minimizes this issue using a hydrokinetic energy conversion system (HKECS) that employs a diode AC-DC converter and voltage source inverter. The genset works with a frequency vs. power droop control. The HKECS is controlled with maximum power point tracking unless the grid frequency rises above a limit that indicates the underloading of the genset. At this point, a controlled DC load is activated so as to decrease the power injected by the HKECS thus regulating the grid frequency at this operating point. The proposed strategy is verified with a set-up with rotating machines and power electronic converters controlled via a dSPACE® system. The dynamic and steady-state operation of the system including power balancing, voltage and frequency control are presented.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129507093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7742018
Abdelrahman A. Karrar, Elamin Mohamed, M. Ahmed, Wafa Elballa, M. Kamel, M. Bowman, Tamatha A. Womack, Preston Cooper, A. Eltom
Primary open-phase faults on station auxiliary transformers (SATs) are characterized by the presence of voltage unbalance at the auxiliary equipment level that could lead to protective device tripping, increased motor acceleration times, overheating or failure to start critical safety loads, particularly in the nuclear power industry. The transformer primary to ground zero sequence impedance has a profound impact on the voltage balance on the secondary (equipment) level but its effects not been fully analyzed in the context of nuclear power plant operation. This study investigates the influence of zero sequence impedance to ground as seen from the transformer primary terminals during an open-phase condition on the performance of nuclear plant auxiliary equipment, in particular the effect on large motor starting and running performance. Dynamic models for the motors were employed and adapted to the sequence network representing the overall system. The resulting system was simulated for a number of open-phase conditions using transformer characteristics representative of the SATs encountered in the nuclear power industry. It was revealed that a lower value of this impedance has a beneficial effect on motor acceleration time and voltage balance for both starting and steady state conditions. The influence of neighboring transformers with a path to ground was also investigated and found to serve towards further improvement of performance.
{"title":"Influence of zero sequence impedances of station auxiliary transformers on equipment performance under open-phase faults","authors":"Abdelrahman A. Karrar, Elamin Mohamed, M. Ahmed, Wafa Elballa, M. Kamel, M. Bowman, Tamatha A. Womack, Preston Cooper, A. Eltom","doi":"10.1109/PESGM.2016.7742018","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7742018","url":null,"abstract":"Primary open-phase faults on station auxiliary transformers (SATs) are characterized by the presence of voltage unbalance at the auxiliary equipment level that could lead to protective device tripping, increased motor acceleration times, overheating or failure to start critical safety loads, particularly in the nuclear power industry. The transformer primary to ground zero sequence impedance has a profound impact on the voltage balance on the secondary (equipment) level but its effects not been fully analyzed in the context of nuclear power plant operation. This study investigates the influence of zero sequence impedance to ground as seen from the transformer primary terminals during an open-phase condition on the performance of nuclear plant auxiliary equipment, in particular the effect on large motor starting and running performance. Dynamic models for the motors were employed and adapted to the sequence network representing the overall system. The resulting system was simulated for a number of open-phase conditions using transformer characteristics representative of the SATs encountered in the nuclear power industry. It was revealed that a lower value of this impedance has a beneficial effect on motor acceleration time and voltage balance for both starting and steady state conditions. The influence of neighboring transformers with a path to ground was also investigated and found to serve towards further improvement of performance.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129466659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741096
Yannan Sun, T. Williams, S. Gourisetti
In this paper, we compare two parameter estimation methods for distribution systems: 1) residual sensitivity analysis and 2) state-vector augmentation with a Kalman filter. These two methods were originally proposed for transmission systems, and are still the most commonly used methods for parameter estimation. Distribution systems have much lower measurement redundancy than transmission systems; therefore, estimating parameters is significantly more difficult. To increase the robustness of parameter estimation, the two methods are applied with combined measurement snapshots (measurement sets taken at different points in time) so that the redundancy for computing the parameter values is increased. The advantages and disadvantages of both methods are discussed. The results of this paper show that state-vector augmentation with a Kalman filter is a better approach for parameter estimation in distribution systems. Simulation studies are done on a modified version of IEEE 13-Node Test Feeder with varying levels of measurement noise and non-zero error in the other system model parameters.
{"title":"A comparative study of distribution system parameter estimation methods","authors":"Yannan Sun, T. Williams, S. Gourisetti","doi":"10.1109/PESGM.2016.7741096","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741096","url":null,"abstract":"In this paper, we compare two parameter estimation methods for distribution systems: 1) residual sensitivity analysis and 2) state-vector augmentation with a Kalman filter. These two methods were originally proposed for transmission systems, and are still the most commonly used methods for parameter estimation. Distribution systems have much lower measurement redundancy than transmission systems; therefore, estimating parameters is significantly more difficult. To increase the robustness of parameter estimation, the two methods are applied with combined measurement snapshots (measurement sets taken at different points in time) so that the redundancy for computing the parameter values is increased. The advantages and disadvantages of both methods are discussed. The results of this paper show that state-vector augmentation with a Kalman filter is a better approach for parameter estimation in distribution systems. Simulation studies are done on a modified version of IEEE 13-Node Test Feeder with varying levels of measurement noise and non-zero error in the other system model parameters.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129658686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741791
Yuwei He, Z. Fu, Jian Chen
Excess energy absorption is an important reason of metal oxide arresters (MOA) failure. Theoretical prediction of MOA failure probability requires the accurate computation of energy absorption in MOA. Several models with good properties in predicting the peak residual voltage have been proposed for the simulation of the dynamic frequency-dependent behavior of MOA, but the performance of these models in estimating the energy absorption is not thoroughly investigated. In this paper, the accuracy of the non-linear resistance model and frequency-dependent models, including the IEEE model, Pinceti-Gianettoni model and Fernandez-Diaz model, in estimating the residual voltage and energy absorption under different impulse currents is investigated experimentally. The energy absorption of MOA under lightning current of 8/20 μs, switching surge current of 30/60 μs, and 1 μs steep current were simulated with different models and compared with the experimentally measured values under corresponding waveform currents. The results show that the frequency-dependent models are accurate in the evaluation of peak residual voltage, but not suitable for the simulation of energy absorption, with a relative error up to 60%, under steep impulse current. The non-linear resistance model shows its poor performance both on peak residual voltage and energy absorption estimation under steep impulse currents. The work of this paper shows that an improved model is necessary for simultaneous accurate prediction of peak residual voltage and energy absorption of MOA under steep impulse currents.
{"title":"Experimental validation of MOA simulation models for energy absorption estimation under different impulse currents","authors":"Yuwei He, Z. Fu, Jian Chen","doi":"10.1109/PESGM.2016.7741791","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741791","url":null,"abstract":"Excess energy absorption is an important reason of metal oxide arresters (MOA) failure. Theoretical prediction of MOA failure probability requires the accurate computation of energy absorption in MOA. Several models with good properties in predicting the peak residual voltage have been proposed for the simulation of the dynamic frequency-dependent behavior of MOA, but the performance of these models in estimating the energy absorption is not thoroughly investigated. In this paper, the accuracy of the non-linear resistance model and frequency-dependent models, including the IEEE model, Pinceti-Gianettoni model and Fernandez-Diaz model, in estimating the residual voltage and energy absorption under different impulse currents is investigated experimentally. The energy absorption of MOA under lightning current of 8/20 μs, switching surge current of 30/60 μs, and 1 μs steep current were simulated with different models and compared with the experimentally measured values under corresponding waveform currents. The results show that the frequency-dependent models are accurate in the evaluation of peak residual voltage, but not suitable for the simulation of energy absorption, with a relative error up to 60%, under steep impulse current. The non-linear resistance model shows its poor performance both on peak residual voltage and energy absorption estimation under steep impulse currents. The work of this paper shows that an improved model is necessary for simultaneous accurate prediction of peak residual voltage and energy absorption of MOA under steep impulse currents.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129910838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741059
Jiahui Guo, Shutang You, Can Huang, Hesen Liu, D. Zhou, Jidong Chai, Ling Wu, Yilu Liu, Jim Glass, Matthew Gardner, Clifton Black
Due to its economical and environmental benefits to society and industry, integrating solar power is continuously growing in many utilities and Independent System Operators (ISOs). However, the intermittent nature of the renewable energy brings new challenges to the system operators. One key to resolve this problem is to have a ubiquitously efficient solar power output forecasting system, so as to help enhance system reliability, improve power quality, achieve better generation scheduling and formulate superior bidding strategies in market. This paper proposes an ensemble learning method to forecast solar power output, combining the state-of-art statistical learning methods. The performance of the model is evaluated through comparing with a benchmark with different metrics, and the numerical results validate the effectiveness of the model.
{"title":"An ensemble solar power output forecasting model through statistical learning of historical weather dataset","authors":"Jiahui Guo, Shutang You, Can Huang, Hesen Liu, D. Zhou, Jidong Chai, Ling Wu, Yilu Liu, Jim Glass, Matthew Gardner, Clifton Black","doi":"10.1109/PESGM.2016.7741059","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741059","url":null,"abstract":"Due to its economical and environmental benefits to society and industry, integrating solar power is continuously growing in many utilities and Independent System Operators (ISOs). However, the intermittent nature of the renewable energy brings new challenges to the system operators. One key to resolve this problem is to have a ubiquitously efficient solar power output forecasting system, so as to help enhance system reliability, improve power quality, achieve better generation scheduling and formulate superior bidding strategies in market. This paper proposes an ensemble learning method to forecast solar power output, combining the state-of-art statistical learning methods. The performance of the model is evaluated through comparing with a benchmark with different metrics, and the numerical results validate the effectiveness of the model.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126977486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741963
Xiao Luo, Zohaib Akhtar, C. Lee, B. Chaudhuri, Siew-Chong Tan, S. Hui
Summary form only given. The concept of electric spring (ES) has been proposed recently as an effective means of distributed voltage control. The idea is to regulate the voltage across the critical (C) loads while allowing the noncritical (NC) impedance-type loads (e.g., water heaters) to vary their power consumption and thus contribute to demand-side response. In this paper, a comparison is made between distributed voltage control using ES against the traditional single point control with STATic COMpensator (STATCOM). For a given range of supply voltage variation, the total reactive capacity required for each option to produce the desired voltage regulation at the point of connection is compared. A simple case study with a single ES and STATCOM is presented first to show that the ES and STATCOM require comparable reactive power to achieve similar voltage regulation. Comparison between a STATCOM and ES is further substantiated through similar case studies on the IEEE 13-bus test feeder system and also on a part of the distribution network in Sha Lo Wan Bay, Hong Kong. In both cases, it turns out that a group of ESs achieves better total voltage regulation than STATCOM with less overall reactive power capacity. Dependence of the ES capability on proportion of critical and NC load is also shown.
{"title":"Distributed voltage control with electric springs: Comparison with STATCOM","authors":"Xiao Luo, Zohaib Akhtar, C. Lee, B. Chaudhuri, Siew-Chong Tan, S. Hui","doi":"10.1109/PESGM.2016.7741963","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741963","url":null,"abstract":"Summary form only given. The concept of electric spring (ES) has been proposed recently as an effective means of distributed voltage control. The idea is to regulate the voltage across the critical (C) loads while allowing the noncritical (NC) impedance-type loads (e.g., water heaters) to vary their power consumption and thus contribute to demand-side response. In this paper, a comparison is made between distributed voltage control using ES against the traditional single point control with STATic COMpensator (STATCOM). For a given range of supply voltage variation, the total reactive capacity required for each option to produce the desired voltage regulation at the point of connection is compared. A simple case study with a single ES and STATCOM is presented first to show that the ES and STATCOM require comparable reactive power to achieve similar voltage regulation. Comparison between a STATCOM and ES is further substantiated through similar case studies on the IEEE 13-bus test feeder system and also on a part of the distribution network in Sha Lo Wan Bay, Hong Kong. In both cases, it turns out that a group of ESs achieves better total voltage regulation than STATCOM with less overall reactive power capacity. Dependence of the ES capability on proportion of critical and NC load is also shown.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129030263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741472
Jun Xiao, Wei Guo, G. Zu, Xiao-xu Gong, F. Li, Linquan Bai
This paper observes the boundary of distribution system security region (DSSR). DSSR is defined as a set of all the operating points satisfying N-1 security constraints. First, the basic concepts of N-1 security are introduced for distribution system under smart grid background. Then, the dividing phenomenon of operating points security is reported, which indicates that DSSR boundary of a given distribution network exists. Moreover, an approximation method based on N-1 simulation is proposed in order to find DSSR boundary. Then, the observation results of the DSSR boundary are presented for the expanded RBTS BUS4 case. The topological characteristics of DSSR boundary are further summarized, which show that the DSSR is a dense set and its boundary is approximately linear. This research indicates the existence of DSSR and gives a method to observe it.
{"title":"An observation method based on N-1 simulation for distribution system security region","authors":"Jun Xiao, Wei Guo, G. Zu, Xiao-xu Gong, F. Li, Linquan Bai","doi":"10.1109/PESGM.2016.7741472","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741472","url":null,"abstract":"This paper observes the boundary of distribution system security region (DSSR). DSSR is defined as a set of all the operating points satisfying N-1 security constraints. First, the basic concepts of N-1 security are introduced for distribution system under smart grid background. Then, the dividing phenomenon of operating points security is reported, which indicates that DSSR boundary of a given distribution network exists. Moreover, an approximation method based on N-1 simulation is proposed in order to find DSSR boundary. Then, the observation results of the DSSR boundary are presented for the expanded RBTS BUS4 case. The topological characteristics of DSSR boundary are further summarized, which show that the DSSR is a dense set and its boundary is approximately linear. This research indicates the existence of DSSR and gives a method to observe it.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"60 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741711
Linn Saarinen, P. Norrlund, U. Lundin, E. Agneholm, A. Westberg
The grid frequency quality in the Nordic power system has been deteriorating during the last decade. To improve the situation, a better understanding of the system is needed. In this paper, a model of the Nordic power system dynamics with respect to normal operation frequency control is set up and compared with full-scale measurements on the system. The “60 s oscillation” of the grid frequency is measured and explained by the system model.
{"title":"Full-scale test and modelling of the frequency control dynamics of the Nordic power system","authors":"Linn Saarinen, P. Norrlund, U. Lundin, E. Agneholm, A. Westberg","doi":"10.1109/PESGM.2016.7741711","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741711","url":null,"abstract":"The grid frequency quality in the Nordic power system has been deteriorating during the last decade. To improve the situation, a better understanding of the system is needed. In this paper, a model of the Nordic power system dynamics with respect to normal operation frequency control is set up and compared with full-scale measurements on the system. The “60 s oscillation” of the grid frequency is measured and explained by the system model.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114831483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-07-17DOI: 10.1109/PESGM.2016.7741181
M. Rana, Li Li, S. Su
The smart grid has been considered as a nextgeneration power system to modernize the traditional grid to improve its security, connectivity and sustainability. Unfortunately, the grid is susceptible to malicious cyber attacks, which can create serious technical, economical and control problems in power network operations. In contrast to the traditional cyber attack minimization techniques, this paper proposes a recursive systematic convolutional (RSC) code and Kalman filter based method in the context of microgrids. Specifically, the proposed RSC code is used to add redundancy in the microgrid states, and the log maximum a posterior is used to recover the state information which is affected by random noises and cyber attacks. Once the estimated states are obtained, a semidefinite programming based optimal feedback controller is proposed to regulate the system states. Test results show that the proposed approach can accurately mitigate the cyber attacks and properly estimate and control the system states.
{"title":"Cyber attack protection and control in microgrids using channel code and semidefinite programming","authors":"M. Rana, Li Li, S. Su","doi":"10.1109/PESGM.2016.7741181","DOIUrl":"https://doi.org/10.1109/PESGM.2016.7741181","url":null,"abstract":"The smart grid has been considered as a nextgeneration power system to modernize the traditional grid to improve its security, connectivity and sustainability. Unfortunately, the grid is susceptible to malicious cyber attacks, which can create serious technical, economical and control problems in power network operations. In contrast to the traditional cyber attack minimization techniques, this paper proposes a recursive systematic convolutional (RSC) code and Kalman filter based method in the context of microgrids. Specifically, the proposed RSC code is used to add redundancy in the microgrid states, and the log maximum a posterior is used to recover the state information which is affected by random noises and cyber attacks. Once the estimated states are obtained, a semidefinite programming based optimal feedback controller is proposed to regulate the system states. Test results show that the proposed approach can accurately mitigate the cyber attacks and properly estimate and control the system states.","PeriodicalId":155315,"journal":{"name":"2016 IEEE Power and Energy Society General Meeting (PESGM)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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